37results about How to "Improve anti-counterfeiting security" patented technology

A two-dimensional bar code-based anti-counterfeiting method, a label, and a method for manufacturing the label. A two-dimensional bar code (11) and a graphic (12) are integrated for anti-counterfeiting; this prevents the problem of cracking by an unscrupulous person using brute-force attack via a digital code. A second printing carrier is used to obscure the graphic (12); this prevents the problem of the graphic (12) being directly visible to and scanned by the unscrupulous person. The presence or absence of a demarcation line between the first printing carrier and the second printing carrier allows for the distinction of a computer-generated two-dimensional bar code image from a two-dimensional image read by an image-reading device; this prevents the problem of a two-dimensional bar code database being cracked by the unscrupulous person via brute-force attack. Because the second printing carrier is affixed randomly onto the first printing carrier, and information of relative positions of the demarcation line between the first printing carrier and the second printing carrier and of the two-dimensional image is stored in data, consistency of the position of the demarcation line can be analyzed and determined; this prevents the unscrupulous person from manufacturing a counterfeit label by imitating the manufacturing process of the label.

The invention relates to a method and a tag based on two-dimension code anti-counterfeiting and a tag manufacturing method. The problem that law breakers decode through method of exhaustion by numeric code is avoided by combining with a two-dimension code and images and characters to anti-counterfeiting; the problem that the law beakers can directly see and scan images and characters is avoided by applying a second printing carrier to cover the images and characters; the two dimension code images which are produced by computers and the two dimension images which are read by an image reading device can be differentiated through the existence of the border of a first printing carrier and the second printing carrier, so that the problem that the law breakers decode the two dimension data base through the method of exhaustion is avoided; due to the fact that the second printing carrier is randomly attached on the first printing carrier, and the border between the first printing carrier and the second printing carrier and relative position information of the two dimension images are stored in data, and whether the position of the border is consistent or not can be analyzed and judged, so that the problem that the lawbreakers manufacture counterfeit tags by simulating manufacturing process of the tags can be prevented.

The invention discloses a design method for realizing multiplexing of a single-color random anti-counterfeiting pattern and a double-color anti-counterfeiting pattern based on a metasurface, in whicha random anti-counterfeiting pattern can be generated by rotating the metasurface under the condition that single-wavelength linear polarized light is incident. Under the condition that double-wavelength polarized light is incident, a double-color anti-counterfeiting pattern can be generated through a rotary polarization analyzer, and finally multiplexing of the single-color random anti-counterfeiting pattern and the double-color anti-counterfeiting pattern is achieved. The design method is ingenious, random selection of the anti-counterfeiting pattern and dual-wavelength implementation of thedouble-color anti-counterfeiting pattern improve the counterfeiting difficulty, so that the double-color anti-counterfeiting pattern is difficult to copy and imitate, and the anti-counterfeiting security is greatly improved. The metasurface structure is simple and compact, the size is small, the weight is light, the metasurface structure can be conveniently integrated to high-end chips, watches,diamond rings and other valuable commodities with the small size, and an anti-counterfeit label based on the design method is not prone to being perceived, obtained and counterfeited.

The invention discloses an aluminum-foil paper color-changing anti-counterfeiting composite device and process. The anti-counterfeiting composite device comprises an aluminum-foil paper body and an aluminum-foil paper main body, wherein the aluminum-foil paper body is composed of aluminum-foil lining paper, an aluminum-foil base material and reflective strip anti-counterfeit labels; the aluminum-foil lining paper is arranged at the bottom of the aluminum-foil base material, the reflective strip anti-counterfeit labels which are distributed in parallel are arranged on the two sides of the middle of the aluminum-foil lining paper and the two sides of the middle of the aluminum-foil base material, and strip-shaped holes are evenly distributed. The aluminum-foil paper body is formed by laminating the aluminum-foil lining paper, the aluminum-foil base material and the reflective strip anti-counterfeit label, so that the product is high in integration degree, wherein the reflective strip anti-counterfeiting label is arranged in the anti-counterfeiting label and viewed through the strip-shaped hole, the anti-counterfeiting capacity of the aluminum-foil paper is further improved in cooperation with the recognition indentation and the photochromic anti-counterfeiting ink layer, and the authenticity of the aluminum-foil paper is recognized conveniently; the aluminum-foil paper body is produced through the anti-counterfeiting composite device, production efficiency and standardization degree are high, and production cost.

The invention discloses a two-dimensional plane simulation space pattern achieving method. The method comprises the following steps that 1, a preset two-dimensional plane pattern is drawn through mapping software; 2, the two-dimensional plane pattern is divided into patch units with different optical effects; 3, round Fresnel lenses with different optical parameters and structures are obtained through programming software according to the number and structures of the patch units; 4, Boolean operation is carried out on the patch units and the round Fresnel lenses at different positions, and Fresnel lenses with different optical parameters are obtained; 5, the Fresnel lenses are spliced to form a new preset two-dimensional pattern. The round Fresnel lenses with different parameters and structures are utilized for modulating light paths, 360-degree observation without dead angles is achieved, and colorful visual effects represented by reflection, refraction, diffraction, interference and the like of light in a multi-section cut crystal are restored more truly.

The invention provides bill paper and a manufacturing method thereof. The method comprises the steps that paper pulp is deposited in a mould; at least one millimeter wave label falls into the paper pulp; after water is filtered away from the paper pulp, the bill paper is formed. The millimeter wave label is added in the bill paper so that an anti-counterfeit mark can be obtained under the condition that the anti-counterfeit mark is not megascopic, a user does not need to carry out complex comparison and anti-counterfeiting distinguishing with naked eyes, the anti-counterfeit mark cannot be easily counterfeited by lawbreakers, convenience is brought to the user, and the anti-counterfeiting safety is improved.

The invention discloses an aluminum foil paper color-changing anti-counterfeit composite device and a process. The anti-counterfeit composite device includes an aluminum foil paper body, and the aluminum foil paper body is composed of an aluminum foil backing paper, an aluminum foil base material and a reflective strip anti-counterfeiting label. The aluminum foil backing paper is set on The bottom of the aluminum foil base material, and both sides of the aluminum foil backing paper and the middle of the aluminum foil base material are provided with parallel anti-counterfeiting anti-counterfeiting labels, and both sides of the top of the aluminum foil base material are provided with evenly distributed strip-shaped holes. In the present invention, the aluminum foil paper body is formed by pressing the aluminum foil backing paper, the aluminum foil base material and the anti-counterfeiting label of the reflective strip, and the degree of integration is high. The anti-counterfeiting ink layer further improves the anti-counterfeiting ability of the aluminum foil paper, which is convenient for identifying the authenticity of the aluminum foil paper. The aluminum foil paper body is produced by the anti-counterfeiting composite device, which has high production efficiency, high degree of standardization, and reduces production costs.

The invention relates to an anti-counterfeit label and a bottle cover, wherein the anti-counterfeit label comprises a substrate as well as an RFID (radio frequency identification) chip and an antenna, wherein the RFID chip and the antenna are arranged on the substrate; the RFID chip is connected with the antenna through a disconnecting mode, wherein the top of the anti-counterfeit bottle cover is provided with the anti-counterfeit label. The anti-counterfeit label and the bottle cover, provided by the invention, have the advantages as follows: as the anti-counterfeit label is mounted at the top of the anti-counterfeit bottle cover, a lifting part of the anti-counterfeit bottle cover rises, so as to burst the RFID chip stored with an unique anti-counterfeit code when the anti-counterfeit bottle cover is opened, so that the connected part of the RFID chip and the antenna of the anti-counterfeit label is snapped; therefore, the anti-counterfeit label cannot be used again, so that a purpose of improving anti-counterfeit safety is achieved.

The invention provides an anti-counterfeiting safety method and device using quantum dots. The anti-counterfeiting safety device comprises a base, a plurality of grooves and a plurality of quantum dotoptical pieces. After a short-wavelength colored light irradiates the plurality of optical parts, each optical part can emit a plurality of fluorescent lights; wherein each fluorescence comprises atleast one wavelength, and each fluorescence has a two-dimensional coordinate position, a fluorescence intensity integral area, a light color and a color gradation corresponding to the fluorescence. Particularly, a plurality of two-dimensional coordinate positions, a plurality of wavelength numerical values and a plurality of fluorescence intensity integral area numerical values are filled into a three-dimensional coordinate system to form a three-dimensional pattern; and simultaneously the plurality of two-dimensional coordinate positions, the plurality of light colors and the plurality of color gradation values are input into a two-dimensional coordinate system to present a two-dimensional color gradation pattern. Therefore, the two-dimensional color gradation pattern or the three-dimensional pattern is used as an information carrying label or a security verification label, so that the complexity of the anti-counterfeiting code can be greatly increased, and the purpose of improving the anti-counterfeiting security is achieved.

The invention provides dynamic multimode fluorescent anti-counterfeiting ink and a technology thereof. The dynamic multimode fluorescent anti-counterfeiting ink is prepared from the following raw materials: resin oil, colloidal oil, alkyd resin, ink oil, wax, a fluorescent material, phenanthroline, a dimethylformamide solvent and an auxiliary agent, wherein the total specific content of the resinoil is 55%-60%, the total specific content of the colloidal oil is 15%-20%, the total specific content of the alkyd resin is 3%-5%, and the total specific content of the ink oil is 3%-5%. According tothe invention, the raw materials of the resin oil, the colloidal oil, the alkyd resin, the ink oil, the wax, the fluorescent material, the phenanthroline, the dimethylformamide solvent and the auxiliary agent are matched; the method comprises the following steps: preparing the raw materials, stirring the raw materials, rolling and grinding, detecting, and packaging the finished product. The spectral emission effect of the ink finished product is enhanced, so that the fluorescence efficiency of the ink finished product is improved, the raw materials have environment-friendly performance, the obtained fluorescent anti-counterfeiting ink also has the environment-friendly effect, and the stability of the ink finished product is enhanced.